[SIR] runs every 45 minutes between St George and Tottenville

Tottenville-bound trains depart St George at 1:21 AM, 2:06 AM, 2:51 AM, 3:36 AM, 4:21 AM, 5:06 AM, 5:51 AM, 6:36 AM, and every 45 minutes thereafter. St George-bound trains depart Tottenville at 2:29 AM, 3:14 AM, 3:59 AM, 4:44 AM, 5:29 AM, 6:14 AM, 6:59 AM, 7:44 AM, and every 45 minutes thereafter. What's happening? Scheduled maintenance

All [SIR] trains from Huguenot to Grant City board from the Tottenville-bound platform

Boarding change includes Huguenot, Annadale, Eltingville, Great Kills, Bay Terrace, Oakwood Heights, New Dorp and Grant City stations. What's happening? Scheduled maintenance

All [SIR] trains from Tompkinsville to Stapleton board from the St George-bound platform

Boarding change affects Tompkinsville and Stapleton stations. What's happening? Scheduled maintenance